What's - 3a (5a-7) ?

I can't figure It out.

Find the intercept of x-y=4

The fraction models below represent to fractions of the same whole. How much of the 5/6 is in 1/3

8 PTS! In two or more complete sentences, Explain how you would find the equation of a parabola, given the coordinate of the focus and the equation of the directrix.

F (x) = 500 (0.9) x Find the values of f (1), f (2), f (3), f (4), and f (5).

Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain. 1. (x + 3) (x + 4) = 12 2. x + 3 = 12 or x + 4 = 12 3. x = 9 or x = 8

A cafeteria charges a fixed price per ounce for the salad bar. A sandwich costs $3.10, and a drink costs $1.75. If a 7-ounce salad and a drink cost the same as a 4-ounce salad and a sand which, how much does the salad cost per ounce?

What do is 4t - 3s2 + for t = - 2 and s = - 3

Use substitution to solve the linear system of equations. y = - 3x + 1 y = 2x - 4

Brian paid $28 for 13 gallons of gasoline. To the nearest cent, how much did one gallon of gasoline cost?

Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, w, after d days. In how many days will the water level be 26 feet?