2+2-2x2÷2+3-3x3÷3+4-4x4÷4+5-5x5÷5+6 -6x6÷6+7-7x7÷7+8-8x8÷8-9÷9+9x9=

If your annual gross income is $62,000 and you have one monthly car payment of $335 and a monthly student loan payment of $225, what is the maximum house payment you can afford. consider a standard 28% front-end ratio and a 36% back-end ratio. also, to complete your calculation, the annual property tax will be $3,600 and the annual homeowner's premium will be $360.

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).