Cuántas soluciones tienen estás ecuaciones? Y=0.5x+3.5
Y=x+7

Y=3/4x-12
Y=0.75x+12

Y=11x+0.5
Y=1/11x+0.5

Y=2.3x+1.7
Y=2.3x-1.7

Y=6-4x
Y=-2x+3

Y=x+1/2
Y=1/2x+1

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅