Which expression represents a number that is four times as large as the sum of 8 and 160?
(160 + 8) = 4
(160 + 8) - 4
(160 = 8) + 4
(160 x 8) + 4

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

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?