What is the value of the expression –9 – 7 + 5?
a.
11
b.
3
c.
–11
d.
–7

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

What is another way to express 36 +32

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.