Andrew has a summer job doing yard work. he is paid 15$ per hour and a 20$ bonus when he completes the yard he was paid 85$ for completing one yard. set up an equation but do not solve.

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

1.3 million hoops i believe

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)