To solve for c, you divide both sides by -18. If you do that, your answer will be -1/16. So, I think you typed the question wrong. Pretty sure it's the first option.
If it’s 5 points no one is gonna answer
50>23.25+4.5x
if he saves money for 5 weeks he’ll have enough money
23.25+4(6)=50.12
The answer is B. 36. You substitute 8 for each x. So, 3x is 3 times 8 which is 24 and x^2 is 8 times 8 which is 64. Then you do order of operations to find the answer.
You would substitute 0.8 in for y and to get the equation 4x+8(0.8)=40. Then, you would simplify and get 4x+6.4=40. Next you would isolate x by subtracting 6.4 from both sides and get the equation 4x=33.6 and then you would divide both sides by 4 to get x=8.4.
The answer is : x=8.4