Combine the like terms to simplify the expression. 9x^2+8y^2+4y^2-3x

a) 6x+12y^2
b) 6x+12y^4
c) 9x^2+12y^2-3x
d) 9x^2+12y^4-3x

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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