Question

Evaluate 3a + 6b when a = 5 and b = –2.4.


A. 0.6
B. –0.6
C. –6.4
D. 6.6

Answer 1

Write the expression that represents 7 subtracted from 8n.


A. 7 − 8n
B. 8n − 7
C. 7 + (−8n)
D. 8 − 7n

Answer 2

Before she went to the grocery store, Jana had 4 tomatoes in her refrigerator. For the next 3 weeks she buys n number of tomatoes each week.


Which algebraic expression represents how many tomatoes she has at the end of three weeks?


A. 4 − 3n
B. 4 + 3n
C. 3n − 4
D.

Answer 3

Evaluate bc + 2d when b = −3, c = −7 and d = 2.4.


A. 16.2
B. 16.4
C. 25.6
D. 25.8

Answer 4

Tammy purchases 16 pairs of socks for a certain amount of money.


Using s for the cost of one pair of socks, which expression represents the total cost of all 16 pairs of socks?


A. 16 − s
B. 16 + s
C. 16s
D.

Answer 5

Tube rental at Totally Tubular is $5 per hour plus an initial deposit of $17.


Which expression represents how much it will cost to rent a tube for d number of hours?


A. 5d − 17
B. 5 – 17d
C. 17 – 5d
D. 17 + 5d

Answer 6

Evaluate 12 – 4x when x = 2.


A. –4
B. 4
C. 6
D. 16

Answer 7

Evaluate 0.67y + 4 when y = 2 and when y = –2.


A. 5.34 and 2.66
B. –5.34 and 2.66
C. –5.34 and –2.66
D. 5.34 and –2.66

Answer 8

Mark has been collecting 11 map pencils each week for several weeks. He then gives 13 pencils to his friend.


If p represents the number of weeks that Mark has been collecting pencils, which expression represents the number of pencils Mark has left?


A. 11p − 13
B. 11p + 13
C. 11 + 13p
D. 13p − 11

Answer 9

Rose blew h bubbles in two hours.


Which algebraic expression shows how many bubbles she blew in one minute?


A.
B.
C.
D.