Need fast!
14.
(08.06 lc)
an unknown number y is 20 more than an unknown number x. the number y is also x less than 2. the equations to find x and y are shown below:

y = x + 20
y = –x + 2

which is a correct step to find x and y? (1 point)

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.

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.