Raquel works in a pet store every day after school and sometimes on weekends. she earns $5.20 per hour. if raquel works 21 hours a week, use front-end estimation to find out about how much she will earn in four weeks. a. $360 b. $400 c. $480 d. $520

Pleasse me i need an answer. give me the correct answer. answer if you know it ! the club will base its decision about whether to increase the budget for the indoor rock climbing facility on the analysis of its usage. the decision to increase the budget will depend on whether members are using the indoor facility at least two times a week. use the best measure of center for both data sets to determine whether the club should increase the budget. assume there are four weeks in a month. if you think the data is inconclusive, explain why.

The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is (1 point) no domain exists {1, 5, 6} {3, 8, 2, 8} {2, 3, 8}

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.