The graph of the function f(x) = (x + 6)(x + 2) is shown. which statements describe the graph? check all that apply.
the vertex is the maximum value.
the axis of symmetry is x = –4.
the domain is all real numbers.
the function is increasing over (–∞, –4).
the function is negative over (–6, –2).

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.