21 3/8+(-51 1/4)
-65 2/5+103
-34.528+78.12
863.78+(-1024.01)

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.