5) A grain storage warehouse has a total of 30 bins. Some bins hold 20 tons of grain each, and the rest hold 15 tons each. How many of each type of bin are there if the capacity of the warehouse is 510 tons?

12 bins holding 20 tons and 18bins holding 15tons

Step-by-step explanation:

it gives a simultaneous eqn

x + y = 30

20x + 15y = 510

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

my guess would be b and d, but i didn’t actually get out the pen and paper. lol