Does 42/48 and 63/72 form a proportion

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

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.

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.