Maura writes an expression equivalent to 8a 2 (23 2 5a) 2 2a. Her work is shown below. 8a 2 (23 2 5a) 2 2a Step 1: 8a 1 3 2 5a 2 2a Step 2: (8a 2 5a 2 2a) 1 3 Step 3: (3a 2 2a) 1 3 Step 4: a 1 3 In what step does Maura make a mistake? Describe her error and find the correct equivalent expression.

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.

Standard deviation of 19,29,21,22,23

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.