2. Which is NOT equivalent to Ax+By=C

A) y=C/B - Ax/B

B) y=C/B - A/B x

C) y= C - A / B x

D) Y=C -Ax/B

3) Ralph is driving from his home to his grandmother’s house at an average rate of 40 miles per hour (mph). He had driven 6 miles when his sister Maria left their house and began driving along the same route. At what average rate, in miles per hour, is Maria driving if she catches up with Ralph in 1 1/2 hours?

A) 60

B) 44

C) 40

D) 46


4) Sam baby-sat for x hours and earned $75. If he baby-sits for y more hours at the same rate, his total earnings will be $100. Which of the following equations represents this situation?

A) 75+(75/x) y=100

B) 75+(75/xy)=100

C) 75+(75/y)x=100

D) 75+xy=100


5) if x= 1/2y,which expression represents 1/x?

A) - 1/2y

B) 1/2y

C) -2y

D) 2y