A group of students investigated the effect of temperature of vinegar on its reaction time with baking soda. To minimize the random errors, they did 3 trials for each temperature change. The following data were collected. At 30 °C, the times it takes for baking soda to react in seconds are 30.1, 30.9 and 30.2 for Trials 1, 2 and 3 respectively. At 55 °C, they recorded the reaction times for the three trials as 25.6 s, 25.9 s and 25.5 s. At 60 °C, the data were 20.0 s, 19.8 s and 19.3s for the three trials. At 75 °C, they recorded the reaction times for the three trials as 15.0 s, 15.2 s and 15.5s. At 90 °C, the reaction times gathered for the three trials are 8.3 s, 8.9 s and 8.8 s. The Effect of (IV) on (DV) Fill in your information and DELETE mine off the template! (including this note and the scenario)

Step-by-step explanation:

next time you answer someone's question with a bunch of random letters just to get the points don't. It rude especially sense you have questions you want answered. Now I could be nice and help you because I know how to solve this and you obviously don't, but I'm giving you the same curtesy as you did me and writing a bunch of gibberish.

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true