Antonio completed the right column of the table to help him find the sum of Two-ninthsand One-fifth. Step 1, Find a common denominator for the fractions. Antonio's Work shows 14. Step 2, Find an equivalent fraction for 2-ninths. Antonio's Work shows 7-fourteenths. Step 3, Find an equivalent fraction for 1-fifth. Antonio's Work shows 10-fourteenths. Step 4, Write the sum as a fraction. Antonio's Work shows 17-fourteenths. In which step did his first error occur? Step

3× __ -2=15 7 2× __+1=7 5 7× =22 15 5× __+10=2 8 × __+4=20 6 × =10 3 × __+2=8 6 × __+8=8 9 × __+7=20 6

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2