1.Ahmad has just received the results of three assignments that he completed last week. His marks were 34 out of 40 on his science fair project,64 out of 80 on
his geography presentation, and 21 out of 25 on his French oral dictation.
a)Calculate each of Ahmad's marks as a percent. b) To summarize his results,
Ahmad decides to calculate two average percentages: First, he calculated the
mean of the three percents in part a). Second, he calculated the percent of total
marks awarded out of total marks available for all three scores. Explain whether
these two percents should be the same. If not, which value should be higher.
Then calculate both values and compare."

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1