Can someone me with this, pls? i'll reward any useful

GPA = 2.4

Step-by-step explanation:

Letter Grade     Value          # Courses             # credits/course        Total

A                         4                      1                           2                                8

B                         3                      2                           3                              18

C                         2                      1                            3                               6

D                          1                      1                            4                               4

The total comes to 36

The A course is  = 2 credits,

The 2 B courses = 2*3 = 6 credits    

The C course          = 3 credits

The D course          = 4 credits

Total number of credits = 15 credits

GPA = 36 / 15 = 2.4

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.