Dr adams is a botanist. she measures the daily height of a particular of sunflower is 60 days old. at 60 days, the height of the sunflower is 205 centimeters. dr adams finds that the growth rate of this sunflower is 2 centimeters per day after the first 60 days. how many day does it take for the sunflower to reach 235 centimeter

Lets write a linear equation to represent this flower growth, lets call y the height of the flower in centimeters and x the number of days passed:
y = 205 + 2x
that means that the flower height y, will grow 2 centimeterrs each x days.
So if we have 235 cm height, we can find the amount of days needed if we replace in the equation and solve for x:
y = 205 + 2x
235 = 205 + 2x
2x = 235 - 205
2x = 30
x = 15
therefore the flower needs 15 days to reach 235 cm height

When two lines intersect, they form two pairs of equal angles, which, taking one of each, add up to 180°. (jargon: angles forming a straight line   show more