On a quiz, students were awarded a certain number of points for a correct answer and penalized a certain number of points for an incorrect answer. if a student answered all the questions on the quiz and had c correct answers, her score on the quiz was 25 c – 10(15 – c). how many questions were on the quiz?

a. 15
b. 35
c. 10
d. 25

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?