4(a + 3)

A. 4a + 3
B. 4 + 3
C. 4a + 12
D. a + 12

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?