PLEASE HELP ME FAST Subtract using a number line.

2.1−2.7

Plot the minuend and the difference on the number line.

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?