If 9\geq4x+19≥4x+19, is greater than or equal to, 4, x, plus, 1, which inequality represents the possible range of values of 12x+312x+312, x, plus, 3? choose 1 12x+3\geq1712x+3≥1712, x, plus, 3, is greater than or equal to, 17 12x+3\leq1712x+3≤1712, x, plus, 3, is less than or equal to, 17 12x+3\geq2712x+3≥2712, x, plus, 3, is greater than or equal to, 27 12x+3\leq2712x+3≤2712, x, plus, 3, is less than or equal to, 27

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:

no

step-by-step explanation:

answer

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).