Charles meets with customers on a daily basis. he uses the function
f(x) = 5x - 81 + 20 to calculate how many dollars he charges, per
hour, for his time.
5. how much does charles charge per hour if a customer hires him for 3 hours?

Which linear equations have an infinite number of solutions? check all that apply.  (x  –  3/7)  =  2/7(3/2x  –  9/14)8(x  +  2)  =  5x  –  1412.3x  –  18  =  3(–6  +  4.1x)(6x  +  10)  =  7(x  –  2)4.2x  –  3.5  =  2.1 (5x  +  8)

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9