Answer:
they would have saved 35 dollars
Step-by-step explanation:
Ralph on his own would have paid 105 and jeff 140 but together with the discount they could save $35 by paying 210 in total with the discount.
8.9% is equal to 0.089 because a percent is over a 100. So, you can just multiply the ROI by the investment to get:
Your answer is:
$712.
1. 9.5x + 1.5
2. 9x + 36
3. 4.8x + 2
4. 22x + 2
<span>1220
Subtracting the lower boundary of 1492 grams from the mean of 3234 gives you 1742 grams below the mean. Dividing 1742 by the standard deviation of 871 gives you 2 standard deviations below the curve. Now doing the same with the upper limit of 4976 grams also gives you 2 standard deviations above the mean (4976-3234)/871 = 2
So you now look for what percentage of the population lies within 2 standard deviations of the mean. Standard lookup tables will indicate that 95.4499736% of the population will be within 2Ď of the mean. So multiply 1278 by 0.954499736 giving 1219.851. Then round to the nearest whole number and you have an estimated 1220 babies that weigh between 1492 grams and 4976 grams.</span>
Answer:
y= -3/5x - 1/5
Step-by-step explanation:
The slope formula:
y=mx+b
m = slope, which is -3/5 in your case
b= your y-intercept, which is -1/5 in your case
Simply plug it in and you get your answer.
