An unknown number y is 15 more than an unknown number x. the number y is also x less than 8. the equations to find x and y are shown below.
y = x + 15
y = −x + 8

which of the following statements is a correct step to find x and y?
answers:
multiply the equations to eliminate y.

add the equations to eliminate x.

write the points where the graphs of the equations intersect the x-axis.

write the points where the graphs of the equations intersect the y-axis.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

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.

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?