1. Solve the equation 7x 8a = 3x + 24a for x.

2. Suppose you're given the formula R = s +2t. If you know that s is three times greater than t, how could you rewrite the formula?

A. R = 5t

B. R = 5s

C. R = 3(s + 2t)

D. R = 3(s + t)

3. If the area A of a triangle is 60 sq m (square meters) and the base b is 20 m (meters), what is the altitude h?

A. 2/3 m

B. 11/2 m

C. 6 m

D. 3 m

4. The distance h a body will move in a free fall is expressed by the formula h = 1/2 gt 2. If g = 980 cm per sec per sec and t = 20 sec, the distance h is

A. 49,000 cm.

B. 196,000 cm.

C. 368,000 cm.

D. 9,800 cm.