Please help, 7th grade algebra.

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

Tessa bought stock in a restaurant for $253.00. her stock is now worth $333.96. what is the percentage increase of the value of tessa's stock? a.) 81% b.) 32% c.) 24% d.) 76%