The typical breaking speed of a vehicle is 60 feet per second. A motorcycle on a drag strip is racing at a speed of 100 miles per hour. After reaching the finish line, the rider breaks his motorcycle, slowing down at a constant rate of 120 feet every three seconds. Write an expression to represent the speed of the motorcycle at a given point in time while slowing down after finishing the race. A) 60x + 100

B) -60x+100

C) 40x-100

D) 100-40x

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

-3(b-8)-5=9(b+2)+1

distribute

-3b+24-5=9b+18+1

add/ subtract

-3b+20=9b+19

20-19= 1

-3b+1=9b

9b+3b= 12b

1=12b

1 divided by 12 = 1/12

answer: 1/12 = b