Whitney’s pilot training requires her to log 40 hours of flight time. after two weeks, she logged 8.25 hours. after two more weeks, she logged an additional 11.65 hours. round whitney’s fight times to the nearest hour. about how many more hours does whitney need to fly to finish her pilot training? a. about 17 hours b. about 19 hours c. about 20 hours d. about 21 hours

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is