Since there are no exponents in this problem, the next step is ✔ (- 2)2.2
.
Simplify the previous step and you get
.
The final answer is

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.