You can buy a skateboard for $14.40 from a friend and rent the safety equipment for $2.90 per hour, or you can rent all items you need for $4.50 per hour. for how many hours will the cost be the same.

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.