28) rob cuts grass as a job. a neighbour asked rob to give a quote for his backyard. rob noticed that the yard was a rectangle shape. he used the formula = × to calculate the area (in square metres). he measured the length along the fence (l=16.2 m) and the length next to the house (b= 6.7m). show working
a) using a calculator and the formula, find the area of the yard.

b) round your answer to the nearest whole number.

c) rob charges $0.46 per square metre. what is the quote for the neighbour’s backyard?
d) if rob didn’t have a calculator and simply rounded off the lengths to the nearest whole number, what would this area be? what would be the implications of using this approximation for the quote?

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .

answer:

given the linear inequality :

add 2y to both sides we get;

simplify:

add 12 to both sides of an equation;

simplify:

divide both sides by 2 we get;

or

the related equation for the inequality equation [1] is;

y-intercepts defined as the graph crosses the y-axis.

substitute x =0 in [2] to solve for y;

y = 6

x-intercepts defined as the graph crosses the x-axis.

substitute value y = 0 to solve for x;

subtract 6 from both sides we get

multiply both sides by 2 we get;

or

x = -12

now, plot these point (0, 6) and (-12, 0) on graph as shown below and shade the graph below the solid line.

sorry not knowing about that