The Ramirez family has a circular garden with a diameter of 22 ft. They cover the garden with mulch. The cost of the mulch is $1.25 per square foot. To the nearest dollar, how much will it cost to cover the garden in mulch? A) $380

B) $475

C) $1,520

D) $1,900

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

Consider the first four terms of the sequence below. what is the 8th term of this sequence?