Davina works at a call centre. The time taken to another each call is recorded in whole seconds. This morning, Davina answered 6 calls within 15-29 seconds and two thirds as many within 30-44 seconds.

Davina thinks she answered at least 55% of calls in fewer than 30 seconds
Is she right or wrong

Which of the following represents the zeros of f(x) = 6x3 − 31x2 + 4x + 5? −5, one third , one half 5, − one third , one half 5, one third , − one half 5, one third , one half

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.

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,