Answer:


Step-by-step explanation:
Required
The equation in slope intercept form
Solving (3):


The equation in slope intercept form is:

This gives:

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Solving (5):


The equation in slope intercept form is:

This gives:

Expand


The answer to the equation is 15
2 rows of 18 chairs are blue so that is 36 chairs. then 4 rows of 12 chairs are blue so that is 48 chairs 36 plus 48 is 84 total blue chairs
Speed is the ditance traveled by a certain object given a certain time span. To solve this problem we need to divide the distance by the time given. Before that, the problem asked us to get the speed in terms of miles per minute and we are given a distance of 3 kilometer. We have to convert this to miles. 3km(0.6miles/km) = 1.8 miles. The speed is then 1.8/20 = 0.09mi/min.