Math

Which situation is best represented by the function f(x), where f(x)=12x + 5?

a. An office-supply store sells x boxes of ballpoint pens that contain a dozen pens per box for $5 each.
b. An Olympic swimmer trains by swimming 12 kilometers on each of x weekdays and 5 kilometers on each day of the weekend.
c. An algebra quiz has x problems worth 12 points each plus 5 extra-credit problems worth 5 points each.
d. Acompany sells x baseball caps for $12 each and charges a $5 shipping fee
Math

Barton College Practice Placement Test Question 25

The profit, P, realized by a company varies directly as the number of products s it sells. If a company makes a profit of $7800 on the sale of 325 products, what is the profit when the company sells 5000 products?

(A) $120,000
(B) $100,000
(C) $80,000
(D) $60,000
Math

LEAP Practice Test Grade 8 Mathematics Session 1 Question 23

Each day of the month, Carl earns an allowance, in cents, equal to the square of that date of the month. Which is a number of cents Carl could earn in a single day?

(A) 21
(B) 31
(C) 64
(D) 111
Math

Barton College Practice Placement Test Question 7

Express in scientific notation: 0. 0000056

(A) 5.6 X 10-6
(B) 5.6 X 106
(C) 5.6 X 10-5
(D) 5.6 X 10-7
Math

Grade 8 Common Core Math Tests Question 7

A square park has an area of 6561 square meters. If you walk around the park, what is the distance that you would have walked?

(A) 81 m
(B) 324 m
(C) 1296 m
(D) 162 m
Math

LEAP Practice Test Grade 8 Mathematics Session 1 Question 25

A company used about 7.4 × 105 sheets of paper in a month. Of the paper used during the month, the accounting department used about 8.9 × 103 of the sheets. About how many sheets of paper were used by other departments during the month?

(A) 1.5 × 102
(B) 1.5 × 103
(C) 7.3 × 104
(D) 7.3 × 105
Math

Grade 8 Common Core Math Tests Question 9

Write the following in standard form: 2.25 x 105

(A) 22500
(B) 225000
(C) 22500000
(D) 2.25000
Math

The formula d = rt is used to calculate the distance an object travels over a period of time, t, at a constant rate, r. Based on this formula, what is the rate, r, in terms of d and t ?

A) r=\frac{d}{t}
B) r=dt
C) r=\frac{t}{d}
D) r=d-t